Bliss" is a song by English rock band Muse and is the second track on their second album, Origin of Symmetry. It was also released as the third single from that album in the United Kingdom on August 20, 2001 (see 2001 in British music).

Matthew Bellamy has said "Bliss" is his favourite song "because it's got all these 80s arpeggios and keyboards on it which remind me of some music I heard on some children’s music programme when I was five. I think I ripped it off that. And that reminds me of when I was a bit simpler, a bit more of a pleasant state."[1]

Chris Wolstenholme said: "We have just always loved playing that song live. Even if you don't know the song it has one of those disco-ey feels to it but recorded in a rock way. It was one of those songs that when we play it live you always know if you are having a bad gig - it will be the song that will get the crowd going."[citation needed]

During the tour in promotion of Origin of Symmetry, "Bliss" was usually played as the final song, often coinciding with the release of giant balloons from the venues' roof. At a gig in Australia during the HAARP tour, balloons were released onto the stage, with Bellamy using his guitar to pop them.